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radical libre
| hydrogéné
| radical libre | |
| chem. | radical livre |
| hydrogène | |
| chem. | hidrogénio |
| econ. | hidrogénio |
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| radical livre | |||
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| radicais livres | |||
| radical libre: 4 phrases in 3 subjects |
| Environment | 2 |
| Health care | 1 |
| Industry | 1 |